Land leveler and road maintainer



April 27 1,582,384 J. H. CORBITT LAND LEVELER -AND ROAD MAINTAINER FiledAugust 28 1925 2 Sheets-Sheet l April 27 1926. 1,582,384

J. H. CORBITT LAND LEVELER AND ROAD MANTAINER Filed August 28. 1925 ESheets--Sheel 2 L LM :Jn/vanto@ Patented Apr. 27, 1926.

unirse stares JAMES H. CORIBITT, OF ILIOUSTON, TEXAS.

LAND LEVELER AND ROAD MAINTINER;

Application filed August 28,` 1925. VSerial No. 53,088.

To all 1li/rom. t may conc-ern.'

Be it known that I, .latins H. Coiznrr'r, citizen ot the United vStates,residing at Houston, in the county ot Harris and State ot Texas, haveinvented certain new and useful Improvements in a Land Leveler and RoadMaintainer, oit which the following is a speciiication. y Thisinvent-ion relates to new and useful improvements in a land leveler androad maintainer.

One' object ofthe invention is to provide an. implement. of thecharacter described specially designed for the purpose of level-V ingland, and reducing the same to a comparatively smooth even surface; theimplement is also Auseful in grading and smoothing dirt, gravel andshell roads.

Another object of the invention-is to produce an implement ot thecharacter described equipped with ground wheels which may be withdrawnfrom contact with the ground while the implement is at work in leveling`or smoothing the ground surface,

but which may be lowered into contact withy the ground, so as to supportthe implement in order that it'may be more easily turned.

A further feature of the invention resides in the combinationwithrunners, of a scraper, or leveling blade, ground wheels, andoperative connections whereby the blade and ground wheels may besimultaneously operated to carry the blade into workingrelation with theground surface and to carry thewheels out of contact with said surfaceand vice versa. A

With the above and other features in view this invention has particularrelation to Cer tain novel features of construction, operation, andarrangement of parts, an example ci' which is given in thisspecification and illustrated in the accompanying drawings, whereinFigure 1 shows a plan view et the impleurent.

ence designate similar parts in'each of the ligures, the numerals 1, 1designate the runners, which are preferably composed et' comparativelyheavy timbers, set edgewise, relative to, the ground. The ends of therunners are rip-turned and the under edges are lined with metal-soles 2,2. AThe runnersl are fixed in proper relation bythe front and reartransversebars 3, 3 andthe corresponding anchor r'ods et, t as well asby therear and iront cross bars 5, 5 and 6, G, nailed or `bolted totheupper edges et the runners. i l ,l

There is a tfansverse scraper bla-de 7 betweenl the runners,approximately midway between their ends. The ends of this blade carrythe overturned Vbearing plates S, 8 which fit against the inner sides ofthe respective runners, and these plates have the respective stub shafts9, 9 which work in bearings through the runners. y Fastened to theseshafts are the pairs ot arms 10, 10, whose tree ends are pivoted to theadjacent ends ot the respective links 11, 11, andthe other ends of theselinks are pivoted tothe tree ends Lot the corresponding pairs ot arms12, 12, which are fixed to the respective ends of the transverse shaft13. This shaft 13 is mounted to rotatein `the bearings 1i, la carried bythe up-A per edges ot the respective supports 15, 15,

which are mounted on the runners 1, 1.

A rlllie shaft 13 has the spaced arms 16, 16, fixed thereon, and pivotedbetween the free ends'o'f these arms there is a tapped block 1 7 havinglet't hand threads. rihe Cross' bars 6 have an anchor 18 securedtheretoy y hand wheel 22.

The arms 10 and links 11 are pivoted toand mounted on these rods are theground wheels 241, 24, located slightly in trent et the longitudinalcenter et' the implement. A suitable seat 25 is provided for the openator behind the hand wheel 22.

The implement may be pulled by a team ot drafty animals or by a tractor.y Then the shatt 21 is turned in one direction is will operate to carrythe arms 16 weasel;

forwardly into horizontal position, running the block 1T into verticalrelation with the block 2O and said shaft Will then assume a verticalposition, as shown in Figure 3. This movement Will operate to rotate theshaft 13 to bring the arms 12 and links 11 in substantially straightline relation, and ivill also sivingil the free ends of the arms ldownwardly and rotate the stub shafts 9, 9 to carry the scraper out ofcontact with the ground. During this movement the ground wheels 2l tillbe carried into contact with the ground surface, and at the limit ofthis movement the front ends of the runners will be elevated clear ofthe ground so that the implement may be easily turned around.

A reverse rotation of the shaft 2l Will elevate the ground Wheels out ofcontact With the ground and 1wilhcarry the blade 7 into Workingposition. As the implement is then moved along, the elevated portions ofthe ground surface will be scraped oif and the depressions filled andthe surface thus leveled.

The reversely threaded blocks 1T and 2O and the correspondingly threadedshaft make it possible to manipulate the implement very expeditiously.

lNhat I claim is l. A. land leveler including spaced runners, atransverse scraper blade mounted to rotate between the runners, groundwheels, and a common means operatively connected with said blade andWheels and operable to simultaneously rotate the blade and shift saidWheels relative to the runners to bring said blade and Wheelsalternately into and out of contact with the ground surface.

2. A land leveler inclndin@ spaced run ners, a transverse scraperblaade, eccentric end shafts carried by the blade and having hearings inthe runners, a transverse shaft mounted on the runners, an arm fixed onone of said end shafts, an arm fixed on the transverse shaft, a linkconnecting said arms, a ground Wheel carried by the first mentioned arm,and means for rotating said transverse shaft to control the position ofsaid blad-eV and ground Wheel.V

3. A land leveler including spaced runners, a transverse scraper bladehaving end shafts which work through bearings in the respective runners,arms fixed on the respective shafts, an actuating shaft, arms carried bysaid actuating shaft Whose free ends are operatively connected With thecorresponding arms of the blade shafts, means for rotating saidactuating shaft and thereby controlling the position of said blade.

4f. A land levcler including spaced runners, a transverse scraper bladehaving end shafts which Work through bearings in the respective runners,arms fixed on the respective shafts, an actuating shaft, arms fixed onthe respect-ive ends of the actuating shaft, and connected with thecorresponding arms of the blade shafts, means for rotating saidactuating shaft and thereby controlling the position of said blade, saidmeansincluding pivotally mounted tapped blocks, one carried by saidactuating shaft and the other carried by said runners, and a handoperable shaft having threaded connections with said blocks.

5. A land leveler including spaced runners, a transverse scraper bladehaving end shafts which Work through bearings in the respective runners,arms fixed on the respee tive shafts, an actuating shaft, arms carriedby said actuating shaft Whose free ends are operatively connected withthe corresponding arms of the blade shafts, means for rotating saidactuating shaft and thereby controlling the position of said blade, saidmeans including a block having a pivotal connection with the actuatingshaft, an anchor fixed with respect to the runners, a tapped blockpivotally connected to said anchor, said blocks being reversely threadedand a hand operable shaft having threaded connections with said blocks.

6. A land leveler includingspaced runners, a transverse scraper bladehaving end shafts which work through bearingscin the respective runners,arms fixed on the respective shafts, an actuating shaft, arms carried bysaid actuating shaft whose free ends are operatively connected with thecorresponding arms of the blade shafts, means for rotating saidactuating shaft and thereby controlling the position of said blade andground Wheels mounted on said first mentioned arms.

In testimony whereof I have signed my name to this specification.

.ninas n. coRBirT,

